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  2. SGS S.A. - Wikipedia

    en.wikipedia.org/wiki/SGS_S.A.

    99,600 (2023) [1] Website. www.sgs.com. SGS (formerly Société Générale de Surveillance (French for General Society of Surveillance )) is a Swiss multinational company headquartered in Geneva, which provides inspection, verification, testing and certification services. Its 99,600 employees operate a network of 2,600 offices and laboratories ...

  3. Serge Massar - Wikipedia

    en.wikipedia.org/wiki/Serge_Massar

    Serge Massar was born in Zambia in 1970. [2] He obtained a degree in physics, then a PhD from the Université libre de Bruxelles (ULB) in 1991 and 1995, respectively. [2] He completed his post-doctoral research at Tel Aviv University from 1995 to 1997, and subsequently at Utrecht University from 1997 to 1998. [2] [3]

  4. Message authentication code - Wikipedia

    en.wikipedia.org/wiki/Message_authentication_code

    Message authentication code. In cryptography, a message authentication code ( MAC ), sometimes known as an authentication tag, is a short piece of information used for authenticating and integrity -checking a message. In other words, to confirm that the message came from the stated sender (its authenticity) and has not been changed (its integrity).

  5. Third-party grading - Wikipedia

    en.wikipedia.org/wiki/Third-party_grading

    Third-party grading (TPG) refers to coin grading & banknote grading authentication, attribution, and encapsulation by independent certification services.. These services will, for a tiered fee depending on the value of the coin, "slab" a coin and assign a grade of 1-70 on the Sheldon grading system, with 1 being the lowest grade, with only faint details visible to 70, a practically perfect ...

  6. Mutual authentication - Wikipedia

    en.wikipedia.org/wiki/Mutual_authentication

    Mutual authentication or two-way authentication (not to be confused with two-factor authentication) refers to two parties authenticating each other at the same time in an authentication protocol. It is a default mode of authentication in some protocols ( IKE, SSH) and optional in others ( TLS ). Mutual authentication is a desired characteristic ...

  7. Multi-factor authentication - Wikipedia

    en.wikipedia.org/wiki/Multi-factor_authentication

    Multi-factor authentication ( MFA; two-factor authentication, or 2FA, along with similar terms) is an electronic authentication method in which a user is granted access to a website or application only after successfully presenting two or more pieces of evidence (or factors) to an authentication mechanism.

  8. Message authentication - Wikipedia

    en.wikipedia.org/wiki/Message_authentication

    Description. Message authentication or data origin authentication is an information security property that indicates that a message has not been modified while in transit ( data integrity) and that the receiving party can verify the source of the message. [1] Message authentication does not necessarily include the property of non-repudiation.

  9. WebAuthn - Wikipedia

    en.wikipedia.org/wiki/WebAuthn

    Web Authentication ( WebAuthn) is a web standard published by the World Wide Web Consortium (W3C). [1] [2] [3] WebAuthn is a core component of the FIDO2 Project under the guidance of the FIDO Alliance. [4] The goal of the project is to standardize an interface for authenticating users to web-based applications and services using public-key ...